Primary Purpose
| primary_purpose | Study_Count |
|---|---|
| Treatment | 1037 |
| Supportive Care | 70 |
| Prevention | 29 |
| NA | 10 |
| Other | 6 |
| Basic Science | 5 |
| Health Services Research | 5 |
| Diagnostic | 3 |
| Screening | 3 |
Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD
See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG
To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html
| Type | Study_count |
|---|---|
| Total_Studies | 1281 |
| interventional | 1168 |
| Observational | 101 |
| Registry | 12 |
```
| intervention_type | Study_Count |
|---|---|
| Drug | 551 |
| Biological | 71 |
| Drug|Other | 64 |
| Biological|Drug | 50 |
| Drug|Procedure | 49 |
| Biological|Drug|Procedure|Radiation | 43 |
| Drug|Procedure|Radiation | 36 |
| Biological|Drug|Procedure | 35 |
| Procedure | 30 |
| Drug|placebo | 25 |
| Drug|Other|Procedure|Radiation | 23 |
| Other | 21 |
| Biological|Drug|Other | 17 |
| Biological|Drug|Other|Procedure|Radiation | 17 |
| Drug|Radiation | 12 |
| Biological|Drug|Radiation | 11 |
| Device | 10 |
| Biological|Other | 8 |
| Drug|Other|Procedure | 8 |
| Biological|Drug|Other|Procedure | 6 |
| Biological|Procedure | 6 |
| Other|Procedure | 6 |
| Device|Drug | 5 |
| Device|Drug|Procedure | 5 |
| Dietary Supplement | 4 |
| Drug|Genetic|Other | 4 |
| Biological|Drug|Genetic|Other|Procedure | 3 |
| Biological|Drug|placebo | 3 |
| Biological|placebo | 3 |
| Dietary Supplement|Drug | 3 |
| Dietary Supplement|placebo | 3 |
| Drug|Genetic|Other|Procedure | 3 |
| Behavioral | 2 |
| Biological|Device|Drug | 2 |
| Biological|Other|placebo | 2 |
| Combination Product | 2 |
| Genetic | 2 |
| Behavioral|Dietary Supplement|Other|Procedure | 1 |
| Behavioral|Drug | 1 |
| Behavioral|Other | 1 |
| Biological|Combination Product|Drug | 1 |
| Biological|Device|Drug|Other | 1 |
| Biological|Device|Drug|Procedure|Radiation | 1 |
| Biological|Device|Drug|Radiation | 1 |
| Biological|Dietary Supplement|Drug|Procedure | 1 |
| Biological|Drug|placebo|Procedure | 1 |
| Biological|Genetic|Other | 1 |
| Biological|Genetic|Other|Procedure | 1 |
| Biological|Other|Procedure | 1 |
| Device|Drug|Other|Procedure|Radiation | 1 |
| Device|Other | 1 |
| Diagnostic Test | 1 |
| Drug|Genetic|Other|Procedure|Radiation | 1 |
| Drug|Genetic|Procedure|Radiation | 1 |
| Drug|Other|placebo | 1 |
| Drug|Other|placebo|Procedure | 1 |
| Drug|Other|Radiation | 1 |
| Drug|placebo|Procedure | 1 |
| Genetic|Radiation | 1 |
| Radiation | 1 |
| Country | Study_Count |
|---|---|
| United States | 838 |
| France | 29 |
| NA | 23 |
| United Kingdom | 18 |
| Japan | 15 |
| United States|Canada | 15 |
| China | 14 |
| Germany | 14 |
| Korea, Republic of | 9 |
| Italy | 8 |
| United States|France | 8 |
| Canada | 7 |
| Australia | 5 |
| Israel | 5 |
| Spain | 5 |
| Singapore | 4 |
| United States|Australia|Canada | 4 |
| United States|Germany | 4 |
| United States|Italy | 4 |
| Belgium | 3 |
| Denmark | 3 |
| Netherlands | 3 |
| Russian Federation | 3 |
| United States|Belgium | 3 |
| United States|Germany|Italy | 3 |
| United States|Germany|Netherlands | 3 |
| United States|United Kingdom | 3 |
| Belgium|Netherlands | 2 |
| Brazil | 2 |
| France|Monaco | 2 |
| Switzerland | 2 |
| Taiwan | 2 |
| United States|Denmark | 2 |
| United States|Denmark|Germany | 2 |
| Algeria|Argentina|Canada|China|Germany|Italy|Korea, Republic of|Spain|Sweden|United Kingdom | 1 |
| Australia|Bulgaria|France|Germany|Greece|Hungary|Italy|Netherlands|Poland|Spain|United Kingdom | 1 |
| Australia|Czechia|France|Israel|Japan|Spain | 1 |
| Australia|France | 1 |
| Austria|Belgium|Czechia|France|Germany|Greece|Italy|Spain|Switzerland | 1 |
| Austria|Czechia|Germany|Italy|Poland|United Kingdom | 1 |
| Austria|Finland|Germany|Russian Federation | 1 |
| Belgium|Canada|Croatia|Germany|Portugal|United Kingdom | 1 |
| Belgium|Canada|Czech Republic|Finland|France|Germany|United States|Greece|Israel|Slovakia|Switzerland|Turkey|United Kingdom | 1 |
| Belgium|Canada|Germany|United Kingdom | 1 |
| Belgium|Czech Republic|France|Germany|Italy|Netherlands | 1 |
| Belgium|Czechia|France|Germany|Netherlands|Slovakia | 1 |
| Belgium|France|Germany|Israel|Italy|Netherlands|Spain|Sweden|United Kingdom | 1 |
| Belgium|France|Portugal | 1 |
| Belgium|Germany|Netherlands|Switzerland | 1 |
| Belgium|Germany|United Kingdom | 1 |
| Bulgaria|France|Germany|Greece|Russian Federation | 1 |
| Canada|United States|Australia|Netherlands|New Zealand|Puerto Rico|Switzerland | 1 |
| Denmark|Norway|Sweden | 1 |
| Denmark|United Kingdom | 1 |
| Finland | 1 |
| Finland|France|Germany|Hungary|Italy|Poland | 1 |
| France|Austria|Belgium|Czechia|Denmark|Germany|Ireland|Italy|Netherlands|Spain|Sweden|Switzerland|United Kingdom | 1 |
| France|Germany | 1 |
| France|Germany|Italy|Slovenia | 1 |
| France|Germany|Netherlands | 1 |
| France|Italy | 1 |
| France|Switzerland | 1 |
| France|Tunisia | 1 |
| Germany|Italy|Spain | 1 |
| Germany|Netherlands | 1 |
| Germany|Netherlands|United Kingdom | 1 |
| Germany|Switzerland | 1 |
| Germany|United States|Belgium|Canada|France|Italy|Netherlands|Spain|Sweden|Turkey|United Kingdom | 1 |
| Hong Kong | 1 |
| Hungary | 1 |
| Italy|Saudi Arabia|United Kingdom | 1 |
| Italy|United Kingdom | 1 |
| Japan|Korea, Republic of | 1 |
| Japan|Korea, Republic of|Taiwan | 1 |
| Spain|United States|Australia|Bulgaria|Czechia|France|Germany|Greece|Hungary|Italy|Netherlands|Poland|Russian Federation|Sweden|United Kingdom | 1 |
| Sweden | 1 |
| Sweden|United States|Belgium|Canada|Czechia|Denmark|France|Germany|Italy|Japan|Korea, Republic of|Poland|Spain|United Kingdom | 1 |
| Thailand | 1 |
| United States|Argentina|Belgium|Brazil|Canada|Czechia|Germany|Greece|Hong Kong|Hungary|Ireland|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Poland|Puerto Rico|Russian Federation|Spain|Taiwan|Thailand | 1 |
| United States|Australia | 1 |
| United States|Australia|Austria|Belgium|Canada|Croatia|Czechia|Estonia|France|Germany|Hungary|India|Ireland|Israel|Italy|Japan|Poland|Russian Federation|Spain|Sweden|Switzerland|United Kingdom | 1 |
| United States|Australia|Austria|Belgium|Canada|Czechia|France|Germany|Israel|Italy|Japan|Lithuania|Netherlands|Poland|Portugal|Russian Federation|Spain|Sweden|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom | 1 |
| United States|Australia|Austria|Belgium|Canada|Czechia|France|Germany|Israel|Italy|Japan|Poland|Portugal|Spain|Turkey|United Kingdom | 1 |
| United States|Australia|Austria|Brazil|Canada|China|Czechia|France|Germany|Israel|Italy|Spain|Japan|Korea, Republic of|Mexico|Netherlands|Poland|Russian Federation|Taiwan|United Kingdom | 1 |
| United States|Australia|Belgium|Brazil|Canada|China|Czechia|France|Germany|Greece|Israel|Italy|Japan|Korea, Republic of|Mexico|Poland|Russian Federation|Spain|Turkey|United Kingdom | 1 |
| United States|Australia|Belgium|Brazil|Canada|Czechia|Denmark|Finland|France|Germany|Greece|Israel|Italy|Korea, Republic of|Mexico|Netherlands|Norway|Poland|Portugal|Spain|Sweden|Turkey|United Kingdom | 1 |
| United States|Australia|Belgium|Bulgaria|Canada|France|Germany|Greece|Israel|Italy|Lebanon|Malaysia|Netherlands|Spain|Sweden|Taiwan|Thailand|Tunisia|Turkey|United Kingdom | 1 |
| United States|Australia|Belgium|Czech Republic|Denmark|France|Germany|Greece|Italy|Netherlands|Russian Federation|Spain|Sweden|Switzerland|United Kingdom | 1 |
| United States|Australia|Belgium|France|Germany|Italy|Poland|Spain|United Kingdom | 1 |
| United States|Australia|Belgium|Germany|Israel|Italy|Korea, Republic of|Russian Federation|Spain|United Kingdom | 1 |
| United States|Australia|Bulgaria|Canada|China|Denmark|Greece|Hong Kong|Italy|Malaysia|Mexico|New Zealand|Romania|Russian Federation|Switzerland|Thailand|United Kingdom | 1 |
| United States|Australia|Canada|France|Germany|Italy|Korea, Republic of|Spain|United Kingdom | 1 |
| United States|Australia|Canada|France|Germany|Italy|United Kingdom | 1 |
| United States|Australia|Canada|New Zealand|Puerto Rico|Saudi Arabia | 1 |
| United States|Australia|Canada|New Zealand|Saudi Arabia | 1 |
| United States|Australia|Canada|Puerto Rico | 1 |
| United States|Australia|Denmark|France|Germany|Italy|Spain|Sweden | 1 |
| United States|Australia|Finland|France|Germany|Netherlands|Spain|United Kingdom | 1 |
| United States|Australia|Finland|Italy|Singapore|Spain|Switzerland | 1 |
| United States|Australia|France|Germany|Italy|Japan|Netherlands | 1 |
| United States|Australia|France|Spain | 1 |
| United States|Australia|Germany | 1 |
| United States|Austria|Belgium|Canada|Czechia|France|Germany|Greece|Hong Kong|Hungary|Italy|Japan|Korea, Republic of|Norway|Spain|Sweden|Taiwan|Turkey|United Kingdom | 1 |
| United States|Austria|Belgium|Canada|France|Germany|Hungary|Italy|Korea, Republic of|Spain|Sweden|Switzerland|Thailand|United Kingdom | 1 |
| United States|Austria|Belgium|Canada|France|Germany|Italy|Netherlands|Poland|Portugal|Spain|United Kingdom | 1 |
| United States|Belgium|Bulgaria|Canada|Czechia|France|Germany|Ireland|Israel|Italy|Netherlands|Spain | 1 |
| United States|Belgium|Canada|Croatia|France|Germany|Israel|Italy|Netherlands|Portugal|Spain|Sweden|United Kingdom | 1 |
| United States|Belgium|Canada|Czechia|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Russian Federation|Spain|United Kingdom | 1 |
| United States|Belgium|Canada|France|Germany|United Kingdom | 1 |
| United States|Belgium|France|Germany|Italy|Spain | 1 |
| United States|Belgium|Italy|Netherlands|Russian Federation|Spain | 1 |
| United States|Brazil | 1 |
| United States|Brazil|Denmark|France|Germany|Hong Kong|Italy|Korea, Republic of|Puerto Rico|Taiwan|United Kingdom | 1 |
| United States|Brazil|France|Israel|Italy|Netherlands|Portugal|Singapore|Spain|United Kingdom | 1 |
| United States|Canada|France|Italy|Norway|Spain|United Kingdom | 1 |
| United States|Canada|France|Spain | 1 |
| United States|Canada|Germany|Israel|Spain | 1 |
| United States|Canada|Germany|Italy|Poland|Spain | 1 |
| United States|Canada|New Zealand | 1 |
| United States|Canada|Puerto Rico | 1 |
| United States|France|Germany | 1 |
| United States|France|Germany|Spain | 1 |
| United States|France|Germany|United Kingdom | 1 |
| United States|France|United Kingdom | 1 |
| United States|Georgia | 1 |
| United States|Germany|Spain | 1 |
| United States|Hungary|Israel|Italy|Spain | 1 |
| United States|India|Israel | 1 |
| United States|Israel | 1 |
| United States|Israel|Peru | 1 |
| United States|Italy|Netherlands|Singapore|Spain | 1 |
| United States|Korea, Republic of | 1 |
| United States|Singapore | 1 |
| United States|Spain | 1 |
| United States|Switzerland | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 687 |
| 2 | 83 |
| 3 | 50 |
| 4 | 32 |
| 5 | 36 |
| 6 | 30 |
| 7 | 15 |
| 8 | 21 |
| 9 | 13 |
| 10 | 12 |
| 11 | 19 |
| 12 | 8 |
| 13 | 7 |
| 14 | 7 |
| 15 | 8 |
| 16 | 6 |
| 17 | 8 |
| 18 | 2 |
| 19 | 4 |
| 20 | 3 |
| 21 | 8 |
| 22 | 4 |
| 23 | 4 |
| 24 | 9 |
| 25 | 2 |
| 26 | 2 |
| 27 | 1 |
| 28 | 8 |
| 29 | 1 |
| 30 | 2 |
| 31 | 3 |
| 32 | 2 |
| 33 | 1 |
| 34 | 2 |
| 35 | 2 |
| 36 | 2 |
| 37 | 3 |
| 38 | 6 |
| 39 | 2 |
| 40 | 1 |
| 42 | 1 |
| 43 | 1 |
| 48 | 3 |
| 52 | 1 |
| 53 | 1 |
| 54 | 1 |
| 59 | 3 |
| 61 | 1 |
| 65 | 2 |
| 66 | 1 |
| 68 | 1 |
| 71 | 1 |
| 72 | 1 |
| 74 | 1 |
| 76 | 1 |
| 81 | 1 |
| 85 | 3 |
| 87 | 2 |
| 88 | 2 |
| 92 | 1 |
| 94 | 2 |
| 96 | 2 |
| 99 | 1 |
| 108 | 1 |
| 119 | 1 |
| 120 | 1 |
| 123 | 1 |
| 158 | 1 |
| 165 | 1 |
| 180 | 1 |
| 185 | 1 |
| 196 | 1 |
| 201 | 1 |
| 234 | 1 |
| 237 | 1 |
| 242 | 1 |
| 269 | 1 |
| 298 | 1 |
| 326 | 1 |
| 341 | 1 |
| 513 | 1 |
| Phase | Study_Count |
|---|---|
| Phase 2 | 483 |
| Phase 1 | 315 |
| Phase 1/Phase 2 | 167 |
| Phase 3 | 97 |
| N/A | 70 |
| Phase 4 | 16 |
| Phase 2/Phase 3 | 12 |
| Early Phase 1 | 8 |
| Number_of_Arms | Count_of_Studies |
|---|---|
| 1 | 606 |
| 2 | 246 |
| 3 | 61 |
| 4 | 30 |
| 5 | 18 |
| 6 | 12 |
| 7 | 5 |
| 8 | 1 |
| 9 | 2 |
| 10 | 1 |
| 11 | 1 |
| 16 | 1 |
| NA | 184 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 19 |
| 2 | 41 |
| 3 | 45 |
| 4 | 56 |
| 5 | 49 |
| 6 | 45 |
| 7 | 49 |
| 8 | 48 |
| 9 | 39 |
| 10 | 51 |
| 11 | 39 |
| 12 | 46 |
| 13 | 58 |
| 14 | 50 |
| 15 | 41 |
| 16 | 26 |
| 17 | 23 |
| 18 | 47 |
| 19 | 33 |
| 20 | 21 |
| 21 | 23 |
| 22 | 18 |
| 23 | 15 |
| 24 | 16 |
| 25 | 20 |
| 26 | 23 |
| 27 | 17 |
| 28 | 19 |
| 29 | 8 |
| 30 | 12 |
| 31 | 5 |
| 32 | 6 |
| 33 | 5 |
| 34 | 6 |
| 35 | 10 |
| 36 | 10 |
| 37 | 6 |
| 38 | 6 |
| 39 | 2 |
| 40 | 6 |
| 41 | 5 |
| 42 | 6 |
| 43 | 1 |
| 44 | 3 |
| 45 | 3 |
| 46 | 4 |
| 47 | 3 |
| 48 | 2 |
| 49 | 3 |
| 50 | 4 |
| 51 | 6 |
| 52 | 3 |
| 53 | 1 |
| 54 | 1 |
| 55 | 4 |
| 59 | 1 |
| 61 | 1 |
| 62 | 2 |
| 64 | 1 |
| 65 | 3 |
| 67 | 2 |
| 68 | 1 |
| 69 | 1 |
| 70 | 2 |
| 71 | 3 |
| 72 | 2 |
| 77 | 1 |
| 78 | 1 |
| 81 | 3 |
| 82 | 1 |
| 83 | 2 |
| 84 | 2 |
| 89 | 1 |
| 92 | 1 |
| 93 | 2 |
| 94 | 1 |
| 98 | 2 |
| 101 | 1 |
| 103 | 1 |
| 106 | 1 |
| 110 | 1 |
| 112 | 2 |
| 127 | 1 |
| 129 | 2 |
| 130 | 1 |
| 133 | 1 |
| 136 | 1 |
| 139 | 1 |
| 141 | 1 |
| 162 | 1 |
| 165 | 1 |
| 174 | 1 |
| 192 | 1 |
| 206 | 1 |
| 213 | 1 |
| 232 | 1 |
| 320 | 1 |
| 439 | 1 |
| 1047 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 23488 | 1149 | 20.442124 |
| Contacts/Locations | 8503 | 1062 | 8.006591 |
| Arms | 2798 | 857 | 3.264877 |
| Interventions | 2798 | 857 | 3.264877 |
| Eligibility | 2526 | 863 | 2.926999 |
| Study Description | 2500 | 753 | 3.320053 |
| Conditions | 2270 | 613 | 3.703099 |
| Study Design | 2254 | 903 | 2.496124 |
| Recruitment Status | 2243 | 1046 | 2.144360 |
| Study Identification | 2094 | 784 | 2.670918 |
| Outcome Measures | 1842 | 756 | 2.436508 |
| Sponsor/Collaborators | 1501 | 742 | 2.022911 |
| None (earliest Version on record) | 1168 | 1168 | 1.000000 |
| Oversight | 1053 | 706 | 1.491501 |
| References | 597 | 295 | 2.023729 |
| More Information | 538 | 169 | 3.183432 |
| Results | 257 | 257 | 1.000000 |
| IPDSharing | 127 | 104 | 1.221154 |
| Baseline Characteristics | 116 | 81 | 1.432099 |
| Reported Adverse Events | 67 | 55 | 1.218182 |
| Results Submission Events | 64 | 64 | 1.000000 |
| Documents | 60 | 58 | 1.034483 |
| Participant Flow | 54 | 46 | 1.173913 |
| Measure | Early.Phase.1 | N.A | Phase.1 | Phase.1.Phase.2 | Phase.2 | Phase.2.Phase.3 | Phase.3 | Phase.4 |
|---|---|---|---|---|---|---|---|---|
| Min. | 6.000 | 2.0000 | 1.00000 | 2.00000 | 3.0000 | 19.0000 | 6.0000 | 21.000 |
| 1st Qu. | 18.750 | 21.0000 | 19.00000 | 30.00000 | 30.0000 | 125.5000 | 124.0000 | 44.750 |
| Median | 20.500 | 40.0000 | 30.00000 | 45.00000 | 50.0000 | 175.0000 | 224.0000 | 71.000 |
| Mean | 20.375 | 107.8788 | 41.53608 | 65.45625 | 84.4207 | 460.9091 | 337.6703 | 92.625 |
| 3rd Qu. | 25.250 | 80.0000 | 48.00000 | 68.25000 | 100.0000 | 303.5000 | 386.0000 | 114.250 |
| Max. | 30.000 | 1732.0000 | 302.00000 | 500.00000 | 3621.0000 | 2000.0000 | 2000.0000 | 309.000 |
| group_type | Group_Count |
|---|---|
| Experimental | 1397 |
| NA | 184 |
| Active Comparator | 130 |
| Other | 69 |
| Placebo Comparator | 39 |
| No Intervention | 25 |
| Sham Comparator | 1 |
| intervention_model | Study_Count |
|---|---|
| Single Group Assignment | 707 |
| Parallel Assignment | 288 |
| NA | 122 |
| Sequential Assignment | 36 |
| Crossover Assignment | 11 |
| Factorial Assignment | 4 |
| primary_purpose | Study_Count |
|---|---|
| Treatment | 1037 |
| Supportive Care | 70 |
| Prevention | 29 |
| NA | 10 |
| Other | 6 |
| Basic Science | 5 |
| Health Services Research | 5 |
| Diagnostic | 3 |
| Screening | 3 |
| Country | Study_Count |
|---|---|
| United States | 46 |
| France | 9 |
| Spain | 6 |
| Italy | 5 |
| NA | 5 |
| Germany | 4 |
| Korea, Republic of | 4 |
| China | 2 |
| Japan | 2 |
| United States|Australia|Canada | 2 |
| Austria | 1 |
| Austria|Belgium|Czech Republic|Denmark|Germany|Ireland|Italy|Netherlands|Spain|Switzerland | 1 |
| Austria|Croatia | 1 |
| Austria|Croatia|Czechia|Denmark|France|Germany|Greece|Israel|Italy|Netherlands|Poland|Portugal|Romania|Serbia|Spain|Sweden|Switzerland|United Kingdom | 1 |
| Austria|Germany | 1 |
| Denmark | 1 |
| Egypt | 1 |
| France|Germany|Italy|Spain | 1 |
| Mexico | 1 |
| Taiwan | 1 |
| United States|Austria|Belgium|Brazil|China|Croatia|Czechia|France|Germany|Italy|Taiwan|United Kingdom | 1 |
| United States|Belgium|Canada|Germany|Netherlands|United Kingdom | 1 |
| United States|Canada | 1 |
| United States|Germany | 1 |
| United States|Israel | 1 |
| United States|Puerto Rico | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 52 |
| 2 | 10 |
| 3 | 3 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 2 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 12 | 2 |
| 13 | 1 |
| 15 | 2 |
| 16 | 1 |
| 18 | 1 |
| 19 | 1 |
| 20 | 1 |
| 22 | 1 |
| 23 | 1 |
| 25 | 1 |
| 43 | 1 |
| 45 | 1 |
| 48 | 1 |
| 50 | 1 |
| 53 | 1 |
| 66 | 1 |
| 70 | 1 |
| 96 | 1 |
| 137 | 1 |
| 142 | 1 |
| 225 | 1 |
| 234 | 1 |
| 280 | 1 |
| 292 | 1 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 6 |
| 2 | 6 |
| 3 | 9 |
| 4 | 9 |
| 5 | 12 |
| 6 | 6 |
| 7 | 5 |
| 8 | 4 |
| 9 | 9 |
| 10 | 6 |
| 11 | 4 |
| 12 | 2 |
| 13 | 1 |
| 15 | 2 |
| 16 | 2 |
| 17 | 1 |
| 18 | 1 |
| 19 | 1 |
| 20 | 2 |
| 24 | 2 |
| 25 | 1 |
| 34 | 1 |
| 37 | 1 |
| 38 | 1 |
| 41 | 1 |
| 84 | 1 |
| 122 | 1 |
| 253 | 1 |
| 267 | 1 |
| 285 | 1 |
| 391 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 2143 | 95 | 22.557895 |
| Contacts/Locations | 1507 | 84 | 17.940476 |
| Study Design | 169 | 77 | 2.194805 |
| Recruitment Status | 139 | 82 | 1.695122 |
| Conditions | 119 | 43 | 2.767442 |
| Study Description | 106 | 46 | 2.304348 |
| Eligibility | 102 | 54 | 1.888889 |
| None (earliest Version on record) | 101 | 101 | 1.000000 |
| Study Identification | 101 | 56 | 1.803571 |
| Sponsor/Collaborators | 94 | 61 | 1.540984 |
| Groups | 81 | 40 | 2.025000 |
| Interventions | 81 | 40 | 2.025000 |
| Outcome Measures | 80 | 46 | 1.739130 |
| Oversight | 43 | 37 | 1.162162 |
| References | 32 | 17 | 1.882353 |
| IPDSharing | 6 | 5 | 1.200000 |
| More Information | 4 | 1 | 4.000000 |
| Baseline Characteristics | 3 | 1 | 3.000000 |
| Results | 3 | 3 | 1.000000 |
| Results Submission Events | 3 | 3 | 1.000000 |
| Documents | 2 | 2 | 1.000000 |
| Participant Flow | 1 | 1 | 1.000000 |
| Measure | Observational |
|---|---|
| Min | 8.00 |
| 1st Qu | 64.50 |
| Median | 151.50 |
| Mean | 810.99 |
| 3rd Qu | 464.00 |
| Max | 15000.00 |
| observational_model | Study_Count |
|---|---|
| Cohort | 47 |
| Case-Only | 25 |
| NA | 10 |
| Case-Control | 9 |
| Other | 8 |
| Case Control | 2 |
| time_perspective | Study_Count |
|---|---|
| Prospective | 76 |
| NA | 9 |
| Retrospective | 7 |
| Cross-Sectional | 6 |
| Other | 3 |
| Country | Study_Count |
|---|---|
| United States | 5 |
| Austria | 1 |
| Belgium | 1 |
| Belgium|Denmark|France|Germany|Greece|Italy|Luxembourg|Norway|Spain|Sweden|United Kingdom | 1 |
| France | 1 |
| Germany | 1 |
| Hong Kong | 1 |
| Korea, Republic of | 1 |
| Site_count | Study_Count |
|---|---|
| 1 | 8 |
| 2 | 1 |
| 7 | 1 |
| 21 | 1 |
| 135 | 1 |
| Count of Versions | Count of Studies |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 3 |
| 6 | 2 |
| 7 | 1 |
| 11 | 1 |
| 13 | 1 |
| Change Type | Count_of_Changes | Count_of_Studies | ratio |
|---|---|---|---|
| Study Status | 47 | 11 | 4.272727 |
| Contacts/Locations | 24 | 7 | 3.428571 |
| None (earliest Version on record) | 12 | 12 | 1.000000 |
| Recruitment Status | 9 | 6 | 1.500000 |
| Eligibility | 8 | 6 | 1.333333 |
| Study Design | 8 | 5 | 1.600000 |
| Study Identification | 7 | 3 | 2.333333 |
| Oversight | 6 | 6 | 1.000000 |
| Sponsor/Collaborators | 4 | 3 | 1.333333 |
| Outcome Measures | 3 | 3 | 1.000000 |
| Study Description | 3 | 2 | 1.500000 |
| Conditions | 2 | 2 | 1.000000 |
| Groups | 2 | 2 | 1.000000 |
| Interventions | 2 | 2 | 1.000000 |
| Measure | Registries |
|---|---|
| Min | 48.00 |
| 1st Qu | 295.00 |
| Median | 694.50 |
| Mean | 5660.25 |
| 3rd Qu | 2150.00 |
| Max | 50000.00 |
| observational_model | Study_Count |
|---|---|
| Cohort | 9 |
| Other | 2 |
| Case-Only | 1 |
| time_perspective | Study_Count |
|---|---|
| Prospective | 10 |
| Other | 2 |
| target_duration | Study_Count |
|---|---|
| 1 Year | 3 |
| 10 Years | 2 |
| 12 Months | 2 |
| 5 Years | 2 |
| 12 Years | 1 |
| 3 Years | 1 |
| 6 Months | 1 |